Featuring a headlining bout of UFC middleweight champion Anderson Silva vs. top contender Chris Weidman, UFC 162 takes place July 6 at at Las Vegas’ MGM Grand Garden Arena. The evening’s main card airs on pay-per-view following prelims on FX and Facebook.

It wasn’t immediately clear where the two new matchups will be slotted on the evening’s lineup.

Leben returns to action after a disappointing loss to Strikeforce import Derek Brunson at December’s UFC 155 event. A longtime fan-favorite and former cast member on the original edition of “The Ultimate Fighter,” Leben is actually mired in a 1-3 slump and could certainly use a positive result. Meanwhile, Craig looks to rebound from a lackluster decision loss to Ronny Markes at January’s UFC on FX 7 event in Brazil. It was the first loss for Craig, who had opened his octagon career with victories over Rafael Natal and Kyle Noke.

Baczynski looks to rebound from a unanimous-decision loss to Mike Pierce at this past December’s UFC on FX 6 event. The disappointing loss snapped a six-fight win streak that included four octagon victories. Meanwhile, Melancon makes his UFC debut following a two-fight stint under the Strikeforce banner that saw him lose a split decision to Isaac Vallie-Flagg before bouncing back with a decision victory over Felipe Portela.